Overview

Despite the fact that dynamic stereoacuity is of considerable relevance to everyday life, the subject has so far never been systematically studied and is still a blank space on the maps of ophthalmology and physiology. This is equally true for dynamic stereoscopy in binocular vision as well as for perception on the basis of movement parallax, a phenomenon of differentiated contour displacement within a given field of vision which is also available to the monocular individual under conditions of head or body or object movement within the visual space. This treatise provides information on spatial three-dimensional perception of moving targets. It offers clues for testing and evaluation to readers who are particularly interested in the two modes of dynamic stereoscopic vision. Furthermore, it aims to provide encouragement for further investigations on dynamic performance of the visual organ.

Full Product Details

Author:   Matthias Sachsenweger ,  W. Ghantus ,  Ulrich Sachsenweger
Publisher:   Springer
Imprint:   Springer
Edition:   Softcover reprint of the original 1st ed. 1991
Volume:   v. 78
Dimensions:   Width: 15.50cm , Height: 0.70cm , Length: 23.50cm
Weight:   0.265kg
ISBN:  

9780792314868

ISBN 10:   0792314867
Pages:   136
Publication Date:   31 December 1991
Audience:   College/higher education ,  Professional and scholarly ,  Postgraduate, Research & Scholarly ,  Professional & Vocational
Format:   Paperback
Publisher's Status:   Active
Availability:   Out of stock  
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Table of Contents

Preface.- 1 Introduction.- 2 Elements of dynamic stereoscopic vision.- 2.1 Monocular dynamic visual acuity.- 2.1.1 Effects of mode of movement.- 2.1.2 Dynamic visual acuity due to eye alterations.- 2.2 Stereoscopic vision.- 2.2.1 Determination of static stereoacuity.- 2.2.2 Quality of stereoacuity.- 2.3 Dynamic parallactoscopy.- 2.3.1 Testing equipment.- 2.4 More empirical factors of stereoscopic vision.- 2.5 Dynamic vision.- 3 Equipment and methods for testing dynamic stereoacuity.- 3.1 Determination of dynamic stereoacuity.- 3.1.1 Binocular rotational prismometer.- 3.1.2 Test object.- 3.1.3 Testing method.- 3.2 Determination of kinetoparallactic stereoacuity.- 3.2.1 Parallactoscopometer.- 3.2.2 Test object.- 3.2.3 Testing method.- 4 Normal values of dynamic stereoacuity.- 4.1 Dynamic stereoacuity.- 4.1.1 Mean values and standard deviation.- 4.1.2 Effect of age.- 4.1.3 Effect of sex.- 4.1.4 Effect of occupational activity.- 4.1.5 Comparison between dynamic stereoacuity and dynamic visual acuity.- 4.2 Dynamic parallactoscopy.- 4.2.1 Mean values and standard deviation.- 4.2.2 Effects of age and static visual acuity.- 4.2.3 Effects of sex and occupational activity.- 4.2.4 Comparison between right and left eyes.- 4.2.5 Comparison between active and passive movement parallax.- 5 Variations of test objects and testing methods.- 5.1 Dynamic stereoacuity.- 5.1.1 Various circular movements.- 5.1.2 Variations in bar thickness.- 5.1.3 Variations in bar spacing.- 5.1.4 Variations in bar height.- 5.1.5 Depth distance of only two bars.- 5.1.6 Depth distance of two surfaces.- 5.2 Dynamic parallactoscopy.- 5.2.1 Variations in bar thickness.- 5.2.2 Variations in bar spacing and bar height.- 5.2.3 Depth distance of two and five bars.- 5.2.4 Double triangular test.- 5.2.5 Variations in image time and object speed.- 5.2.6 Variations in direction of movements.- 6 Dynamic stereoacuity in response to changes in perception conditions.- 6.1 Dynamic stereoacuity.- 6.1.1 Bilateral impairment of visual acuity.- 6.1.2 Unilateral impairment of visual acuity.- 6.1.3 Conditions of scotopic vision.- 6.1.4 Unilateral light absorption.- 6.1.5 Anisometropia.- 6.2 Dynamic parallactoscopy.- 6.2.1 Impairment of visual acuity.- 6.2.2 Conditions of scotopic vision.- 7 Effect of psychosensorial factors.- 7.1 Fatigue.- 7.2 Effect of psychosedatives.- 7.3 Effect of hypnotics.- 7.4 Short-time and long-time exercises.- 7.5 Asthenopia.- 8 Comparison between dynamic and kinetoparallactic stereoacuities.- 9 Conclusions.

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